Memo field can be all b'\x00' (for no memo).
Memo field can be all b'\x00' (for no memo).

Encountered in .config/libreoffice/3/user/database/biblio/biblio.dbt

olemb/dbfread,lab22-tw/pydbf,wangyu190810/dbfread,Yuego/dbfread,rainwoodman/dbfread